La fuerza y el movimiento (Forces and Motion)

The US president is the face of the United States to the rest of the world. However, he or she doesn’t have unlimited power within the country. The president has certain powers given by the Constitution, including the ability to make treaties, appoint some important government officials, and veto laws. Readers learn the many duties of the president in simple, clear language appropriate for both younger readers and older readers looking for a succinct review of the topic. Fact boxes supplement the main content with important details about checks and balances, amendments, and more that affect...

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

"Pterodactyls are one of the most fascinating ancient creatures. Now in Spanish, this carefully leveled text includes fascinating facts about these fancy flyers in an accessible format. Diagrams, age-appropriate critical thinking questions, and other features inspire visual learning and engagement."

—¿Mi primera tarea? —Sí, tu primera misión, si lo prefieres. Lo que tendrás que hacer en espera de otras instrucciones. —No estoy seguro de comprenderlo. —Has vivido cosas que, en cierta manera, se han grabado en ti y condicionan la forma en que ves el mundo, en que te comportas, tus relaciones con los demás, tus emociones... El resultado de todo ello es un verdadero desastre, hablando claramente. Te causa problemas y te hace desgraciado. Tu vida será mediocre mientras la vivas así, por lo que hay que obrar ciertos cambios. »Es necesario que vivas cierto número de...

Introduces Iran, including the geography, people, education, rural and urban life, housing, food, work, and amusements, along with other information about the country.

La serie Cienciaenshorts nace para dar cabida a pequeños relatos que acercan al público de forma amena diferentes aspectos de la ciencia en formatos literarios. Obras menores solo en extensión. Se trata de una fórmula imaginativa que puso en marcha hace años nuestra editorial en forma de concurso, donde los autores de los relatos fueran científicos-escritores con voluntad de trasmitir con precisión conceptos científicos a la sociedad, de una manera comprensible para esta. El jurado del I Concurso de relatos científico-literarios "¿Te atreves...?" estuvo compuesto por los siguientes...